Furnace



L. V. REESE April 23, 1929.

FURNACE 2 Sheets-Sheet i l Filed Dec. 22, 1926 la, l

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L. V. REESE FURNAGE Filed Dec. 22, 1926 l April 23, 1929.

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Patented Apr. 23,

l,UNITED STATES. PATENT or'rlcrz.v

` LEMUEL V. BEESE, F ERIE, PENNSYLVANIA, ASSIGNOR TO ERIE CITY IRON WORKS,

. OF ERIE, IPENNSYLVANIA, A CORPORATION 0F PENNSYLVANIA.

FURNACE.

Application led December 22, 1926. Serial No. 156,494.-

This invention is designed to improve furnaces for burning types of fuel subjecting the furnace to slagging temperatures. With f such furnaces it is desirable to separate the floor of the ash pit from the body of the chamber in order that the slag may be chilled priorto reaching the ash pit so as to prevent agglomeration in the ash pit. Such a furnace has been illustrated and described in the patent to Frederick Seymour, #1,355,172, dated Oct. 12th,' 1920 and the present furnace is in the nature ofI an improvement of said Seymour furnace. Features andv details of the invention will appear from the specification and claims.

The invention is illustrated in the accompanying drawings as followszT Fig'. 1 is a vertical section of the furnace on the line 1 1 in Fig. 2. Y A

Fig. 2 a horizontal section on the line 2-2 in Fig. 1. l i

Fig. 3 a section on the line 3f3 in Fig. 2. Fig. 4 a perspectiveview of one of the tile. 1 marks the furnace chamber, 2 a boiler which, as shown, is of a conventional three-4 drum type although the furnace is not limited to a boiler furnace, or to a boiler of this: type, and 3 the fuel delivering means as shown of a type to delivei` -pulverized fuel. Water tubes 4and 5 are arranged across the furnace^ above vthe ash pit in two sets, the tubes 4 being in an upper set in a slightly varying inclination to the horizontal to` assure circulation"and the tubesv 5 being arranged in a set in a plane preferably parallel to the tubes 4. v The tubes are arranged in pairs, one tubel ofeach pair being in the upper set and o e tube of each pair in the lower set and the tubes of each pair are preferably off-set as` shown. The tubes 4 extend into headers 6. and 7 and the tubes 5 into headers 8 and 9. The headers 6 and 8 are arranged in a recess 10 in the wall of the furnace and the headers97 andy 9 in a similar recess 11 in the rear wall of^the furnace. These headers are provided -with hand-holes opposite each tube, the hand-holes being provided with hand-hole covers 12. By removing the hand-hole covers 12 the tubes are so exposed as to permit of convenien't cleaning or replacing. Tile` 13 are provided with hooks 14 at theirupper ends and a row of tile is arranged on each `pairof tubes 4 and 5.v Preferably the tile are inclined at each side so-as to `face theopposite wall. I

' positely inclined as. shown. 'a sufliciently cooled zone may be maintained Thus the radiant heat from the tile is less destructive ofthe wall and is directed so as to increase the heat 'at thedesired zone of combustion. The tile covering of one pair of tubes preferablyoverlaps the tile covering the adjacent pair of tubes so that observed vcrtically the tile will form a complete floor except for the central slot where the tile are oplVith these tile above the bottom of the ash pit to assure the chilling of the slag prior to its deposit in' the ash pit so as to prevent its agglomeration in the ash pit. 4At the same time thecooling of the combustion chamber yitself may be restricted as desired through the action of the tile.

lVhat ll claim as new is 1. In a lurnace,.the combination of a furnace chamber; two sets of tubes extending over the ash pit and below the combustion space of the chamber, one set above the other, said tubes being arranged in pairs, each pair having a tube in each set; and a tile covering comprising units, each unit extending from an upper tube of a pair to a lower tube of a pair and'forming a plurality vof openings between pairs of tubes and between the fur- -nace chamber and the ash pit.

2. AIn a furnace, thecoml'iination of a furnace chamber; two sets of tubes extending over the ash pit and below the combustion space of thechamber, one set above the other, said tubes being arranged in pairs, each pair having a tube in each set and the tubes of eachvpair being off-setgand a tile covering comprising unlts, each unit extending from the upper tube of a pair to a lower tube of ha pair, the covering for one pair oftubes being inclined in the same directionas the covering of an adjacent pair' and forming `openings between said pairs and between the ash pit vand the furnace chamber.

3. In a furnace, the combination of a furnace chamber; two sets of tubes extending overlapping the covering for one pair' of tubes being inclined in the same direction as the covering of an adjacent pair and forming openings between said pairs and between the ash pitand the furnace chamber.

4. In a furnace,'the combination of a furnace chamber; two sets of t-ubes extending over the ash pit and below the combustion space of the chamber, one set above the other, said tubes being arranged in pairs, each pair having a tube in each set and the tubes of each pair being off-set; and a tile covering comprising units, each unit extending from the upper tube of a pair to a lower tube of a pair, the lface of the tile being inclined and forming inclined openings between the ash pit and the chamber.

5. In a furnace, the combination of ak furnace chamber; two sets of tubes extending over the ash pit of the chamber, one set above ythe other, said tubes being arranged ,in pairs,

each pair having a tube in each set and the tubes of each pair being off-set; and a tile covering comprising units, each unit extending from the upper tube of a pair to a lower tube of a pair, the face of the tile being inclined, those at one side of the furnace being oppositely inclined from those of the other and faced toward the opposite wal-l of the furnace, there being a plurality of pairs at each side of the furnace and a plurality of openings between pairs of tubes at each side of the furnace connecting the furnace chamber with the aslrpit. y

6. In a furnace, the combination of a furnace chamber; two sets of tubes extending over the ash pit of the chamber, one set above the other, said tubes being arranged in pairs, each pair having a tube 4in each set; and a tilev covering comprising unitseach unit extending from an upper tube of a pair to a lower tube of a pair, the tile of'said covering having hooks engaging the upper tube of each pair.

7. In a furnace, the combination of a furnace chamber; two sets of tubes extending over the ash pit of the chamber, one set above the other, saidl tubes being arranged in pairs and each pair having a tube in each set, the tubes of a pair being. off-set; and a tile covering for each pair, the tile of the covering having hooks engaging the upper tubes, saitl tile being inclined, the inclination at one side of the furnace being opposite to the inclination of the other side of the furnace and the tile at each side of the furnace facingl the opposite wall of the furnace..

vIn testimony whereof I have hereunto vset my hand.

LEMUEL V, REESE. 

